#include <stdio.h>
#include <string.h>
#include <unistd.h>

int main()
{
    printf("hello printf\n");
    fprintf(stdout, "hello fprintf\n");
    const char* s = "hello fwrite\n";
    fwrite(s, strlen(s), 1, stdout);

    const char* ss = "hello write\n";
    write(1, ss, strlen(ss));

    fork();

    return 0;
}
